GNU Moe

https://www.gnu.org/software/moeMoe is a powerful-but-simple-to-use text editor. It works in a modeless manner, and features an intuitive set of key-bindings that assign a degree of severity to each key; for example, key combinations with the Alt key are for harmless commands like cursor movements while combinations with the Control key are for commands that will modify the text. Moe features multiple windows, unlimited undo/redo, unlimited line length, global search and replace, and more.

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